Wow! Surprised by the surface rust. My targets usually get stored under the plasma table and there is splashing whenI cut. I usually cover them with a tarp, but on occasion they still get wet. Should wipe off with a rag. Any steel that has been shot blasted to clean it up will oxidize quicker when it is exposed to any moisture. Again, this will wipe off with a rag.

This batch of targets was also shot blasted, which is something I normally do not do. The shot blasting is nice, but it removes the mill scale, making it more suceptable to surface rust.

Looks just like only that one target has very light markings.

I usually leave my targets raw steel to be quite honest with you. You can paint them, but after a day of use it will need another painting.